Last but not least are frequencies around a billionth of a billionth of a Hertz.
Last but not least are frequencies around a billionth of a billionth of a Hertz.
最后一个频率范围是在几十亿分之一的几十亿之一赫兹。
Last but not least are frequencies around a billionth of a billionth of a Hertz.
最后一个频率范围是在几十亿分之一的几十亿之一赫兹。